CN107123371A - A kind of flexible display panels and preparation method thereof, flexible display apparatus - Google Patents
A kind of flexible display panels and preparation method thereof, flexible display apparatus Download PDFInfo
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- CN107123371A CN107123371A CN201710289103.8A CN201710289103A CN107123371A CN 107123371 A CN107123371 A CN 107123371A CN 201710289103 A CN201710289103 A CN 201710289103A CN 107123371 A CN107123371 A CN 107123371A
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- base layer
- thermal expansion
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The embodiment of the present invention provides a kind of flexible display panels and preparation method thereof, flexible display apparatus, is related to flexible display technologies field, when for reducing, flexible substrates are separated with bearing substrate, the influence to display device.The preparation method of flexible display panels includes：The first fexible film precursor solution containing thermal expansion particulate is coated on bearing substrate, to form the first flexible base layer；Wherein, thermal expansion particulate is made up of housing and the core that is coated in housing；Second fexible film precursor solution of the coating not comprising thermal expansion particulate in the first flexible base layer, to form the second flexible base layer；Display device is prepared in the second flexible base layer；The bearing substrate for being formed with display device is heated, so that the core gasification of thermal expansion particulate, casing rupture, and the first flexible base layer is stripped down from bearing substrate, obtain flexible display panels.
Description
Technical field
The present invention relates to flexible display technologies field, more particularly to it is a kind of flexible display panels and preparation method thereof, flexible
Display device.
Background technology
Flexible display apparatus refers to the bending deformed display device of display panel, and it includes flexible organic electro-luminescence and shown
The polytypes such as showing device, flexible electrophoretic display apparatus, flexible liquid crystal device.Compared with display device, Flexible Displays dress
Put flexible or fold, with impact resistance, shock resistance it is strong, lightweight, it is easy to carry many advantages, such as, therefore Flexible Displays
Device is increasingly widely applied.
The preparation method of existing flexible display apparatus is：By flexible substrates by fitting or coating (coating) etc.
It is attached on bearing substrate, then prepares display device on a flexible substrate, finally shells the flexible substrates of completion and bearing substrate
From obtaining including the flexible display panels of flexible substrates.
At present, generally flexible substrates and bearing substrate are peeled off using laser lift-off (Laster Lift-Off) mode.So
And, using laser lift-off during, may there is fraction of laser light to be irradiated to through flexible substrates on display device, thus to display
The performance of element impacts (such as threshold voltage), in addition, Laser beam energy distribution is uneven, also easily causes to flexible substrates
Damage.
The content of the invention
Embodiments of the invention provide a kind of flexible display panels and preparation method thereof, flexible display apparatus, for reducing
When flexible substrates are separated with bearing substrate, the influence to display device.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
The one side of the embodiment of the present invention there is provided a kind of preparation method of flexible display panels, including：On bearing substrate
The first fexible film precursor solution containing thermal expansion particulate is coated, to form the first flexible base layer；Wherein, the heat is swollen
Swollen particulate is made up of housing and the core that is coated in the housing；Coating does not include hot swollen in first flexible base layer
Second fexible film precursor solution of swollen particulate, to form the second flexible base layer；Made in second flexible base layer
Standby display device；The bearing substrate for being formed with the display device is heated, so that the core of the thermal expansion particulate
Material gasification, casing rupture, and first flexible base layer is stripped down from the bearing substrate, obtain Flexible Displays face
Plate.
Optionally, the thermal expansion particulate is microspheres, a diameter of 1-40 μm of the microspheres.
Optionally, percent by volume of the thermal expansion particulate in the first fexible film precursor solution is
0.5%-10%.
Optionally, before the second flexible base layer of the formation, the preparation method also includes：To the described first flexible base
Bottom is solidified；Wherein, curing mode is illumination curing or is heating and curing.
Optionally, constituting the material of the housing includes thermoplasticity high polymer material；Constitute the material bag of the core
Include liquid organic hydrocarbon material.
Optionally, constituting the material of the housing of the thermal expansion particulate includes crylic acid resin polymer；Constitute described
The material of the core of thermal expansion particulate includes alkanes material；When the curing mode is heating, described first is constituted flexible
The material of thin film precursor solution includes polyimide material；Or, when the curing mode is illumination, constitute described first
The material of fexible film precursor solution includes polyacrylate material.
Optionally, the material of the part in the first fexible film precursor solution in addition to the thermal expansion particulate with
The material of the second fexible film precursor solution is identical.
Optionally, described pair is formed with before the bearing substrate of the display device heats, and the preparation method is also
Including：Processing is packaged to the display device.
The another aspect of the embodiment of the present invention there is provided a kind of flexible display panels, including：The the first flexible base set gradually
Bottom and the second flexible base layer, and the display device in second flexible base layer；Wherein, described first is flexible
The housing that the light that there is thermal expansion particulate to be formed after rupturing in basalis is taken out behind hole, and thermal expansion particulate rupture is residual
Piece.
There is provided a kind of flexible display apparatus, including Flexible Displays face as described above for the another aspect of the embodiment of the present invention
Plate.
Embodiments of the invention provide a kind of flexible display panels and preparation method thereof, flexible display apparatus, the making side
Method includes：First, the fexible film precursor solution containing thermal expansion particulate is coated on bearing substrate, it is flexible to form first
Basalis；Wherein, thermal expansion particulate is made up of housing and the core that is coated in housing.Then, in the first flexible base layer
Second fexible film precursor solution of the coating not comprising thermal expansion particulate, to form the second flexible base layer.Next,
Display device is prepared in two flexible base layers.Finally, the bearing substrate for being formed with display device is heated, so that thermal expansion
The core gasification of particulate, casing rupture, and the first flexible base layer is stripped down from bearing substrate, so as to obtain flexible aobvious
Show panel.
Based on this, when being heated to bearing substrate, the core gasification in thermal expansion particulate, casing rupture, therefore core
The gas that gasification is produced is released.Because the first flexible base layer is located on bearing substrate, therefore the core in thermal expansion particulate
The gas that gasification is formed can cause the adhesion between the first flexible base layer and bearing substrate to reduce, so as to be easy to soft by first
Property basalis is separated with bearing substrate.In addition, separated the first flexible base layer with bearing substrate by mode of heating, can
To reduce the damage to display device.So, it can reduce when the first flexible base layer is separated with bearing substrate to shape
Into flexible display panels influence.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of preparation method flow chart of flexible display panels provided in an embodiment of the present invention；
Fig. 2 a-2d prepare the process schematic of flexible display panels for the method according to Fig. 1；
Fig. 3 is a kind of structural representation of thermal expansion particulate provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of flexible display panels provided in an embodiment of the present invention.
Reference：
01- flexible display panels；10- bearing substrates；The flexible base layers of 11- first；The flexible base layers of 12- second；13- shows
Show device；20- thermal expansion particulates；201- housings；202- cores.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of preparation method of flexible display panels, as shown in figure 1, including：
Step S101, as shown in Figure 2 a, coats the first fexible film containing thermal expansion particulate 20 on bearing substrate 10
Precursor solution, to form the first flexible base layer 11；Wherein, above-mentioned thermal expansion particulate 20 as shown in figure 3, by housing 201 with
The core 202 being coated in housing 201 is constituted.
It should be noted that the first, present invention is not limited the material for constituting above-mentioned bearing substrate 10.Example, on
It can be glass substrate or metal substrate to state bearing substrate 10.
Secondth, the present invention is not limited the material for constituting the first fexible film precursor solution.Optionally, constitute above-mentioned
The material of first fexible film precursor solution can include the polymer based on polyester, the polymer based on silicone, acrylic acid
One or more in polymer, the polymer based on polyolefin its copolymer.It is further alternative, it can include poly- to benzene two
Formic acid glycol ester (English name：Polyethylene terephthalate, English abbreviation：PET), poly terephthalic acid fourth
Diol ester (English name：Polybutylene terephthalate, English abbreviation：PBT), polysilane, polysiloxanes, poly- silicon
Azane, Polycarbosilane, polyacrylate, polymethacrylates, poly- ethyl propylene acid esters, poly- ethylmethyl acrylate, ring
Olefin copolymer (COC), cyclic olefin polymer (COP), polyethylene (English name：Polyethylene, English abbreviation：PE)、
Polypropylene (English name：Polypropylene, English abbreviation：PP), polyimides (English name：Polyimide, English letter
Claim：PI), polymethyl methacrylate (English name：Polymethyl methacrylate, English abbreviation：PMMA), polyphenyl
Ethene (English name：Polystyrene, English abbreviation：PS), polyacetals (English name：Polyformaldehyde, English
Referred to as：POM), polyether-ether-ketone (PEEK), polyether sulfone (English name：Polyethersulfone, English abbreviation：PES), poly- four
PVF (English name：Polytetrafluoroethylene, English abbreviation：PTFE), polyvinyl chloride (English name：
Polyvinylchlorid, English abbreviation：PVC), makrolon (English name：Polycarbonate, English abbreviation：PC)、
Kynoar (English name：Polyvinylidene fluoride；English abbreviation：PVDF), perfluoroalkyl (English name：
Polyfluoroalkoxy, English abbreviation：PFA), acrylonitritrile-styrene resin (English name：acrylonitrile-
styrene copolymer；English abbreviation：SAN the one or more in).
3rd, the characteristic of thermal expansion particulate 20 is：When thermal expansion particulate 20 is heated, the glass transition temperature of housing 201 is reached
When, housing 201 will soften, and with certain plasticity.The core 202 being coated in housing 201 can gasify production when being heated
Raw certain pressure, so that housing 201 expands；During expansion, the pressure and the tension force of housing wall produced by core 202 is put down
Weighing apparatus, at a certain temperature, temperature is higher, and the pressure that core 202 is produced is bigger, and housing wall may proceed to balance this pressure
Stretching, now, thermal expansion particulate 20 keep foam stabilizing form.If continue thermal expansion particulate 20 is heated, housing 201 understand after
It is thinning that continuous expansion causes housing wall to continue, when the tension force of housing 201 is not enough to offset the pressure of the gasification generation of core 202, shell
Body 201 can be ruptured, and the gas that the gasification of core 202 is produced is released.The present invention is not done to the structure and material of thermal expansion particulate 20
Limit, example, as shown in figure 3, the housing 201 of thermal expansion particulate is square, core 202 is circle.
In order to ensure that the gas that thermal expansion particulate 20 is produced when being heated can be very good so that the first flexible base layer 11
Separated with bearing substrate 10, it is preferred that constituting the material of housing 21 includes thermoplasticity high polymer material；Constitute the material of core 22
Material includes liquid organic hydrocarbon material.
On this basis, continue executing with：Step S102, as shown in Figure 2 b, coats in the first flexible base layer 11 and does not wrap
Second fexible film precursor solution of particulate containing thermal expansion 20, to form the second flexible base layer 12.
Step S103, as shown in Figure 2 c, display device 13 is prepared in the second flexible base layer 12.
It should be noted that the present invention is not limited the structure of display device 13.Example, display device 13 can be
Organic Light Emitting Diode (English full name：Organic Light-Emitting Diode, English abbreviation：OLED), or for liquid
Crystal display (English full name：Liquid Crystal Display, English abbreviation：LCD), or for the pole of macromolecular LED two
Manage (English full name：Polymer light-emitting diode, English abbreviation：PLED).
Step S104, as shown in Figure 2 d, enters to the bearing substrate 10 that formation as shown in Figure 2 c has aforementioned display device part 13
Row heating, so that the core 202 in above-mentioned thermal expansion particulate gasifies, housing 201 ruptures, and by the first flexible base layer 11 from holding
Stripped down on carried base board 10, obtain flexible display panels 01 as shown in Figure 4.
Based on this, as shown in Figure 2 d, when being heated to bearing substrate 10, the core 202 in thermal expansion particulate gasifies, shell
Body 201 is ruptured, therefore the gas that the gasification of core 202 is produced is released.Because the first flexible base layer 11 is located at bearing substrate 10
On, therefore the gas of the gasification formation of core 202 in thermal expansion particulate 20 can cause the first flexible base layer 11 and bearing substrate
Adhesion reduction between 10, so as to be easy to be separated the first flexible base layer 11 with bearing substrate 10.In addition, by adding
Hot mode separates the first flexible base layer 11 with bearing substrate 10, it is possible to reduce the damage to display device 13.So,
The influence of the flexible display panels 01 when the first flexible base layer 11 is separated with bearing substrate 10 to formation can be reduced.
In addition, when making flexible display panels 01, display device 13 will not generally cover the first flexible base layer 11
Completely, thus display device 13 light in the first 11 outgoing of flexible base layer, first that display device 13 is not covered is flexible
The beam projecting amount of the part of basalis 11 is less, so that the light extraction efficiency of flexible display panels 01 is relatively low.
The flexible display panels 01 of preparation method formation provided in an embodiment of the present invention, as shown in figure 4, the first flexible substrates
The light that there is thermal expansion particulate 20 to be formed after rupturing in layer 11 takes out the housing relic after hole A, and the rupture of thermal expansion particulate 21
(not shown).In the case, when the light of display device 13 exposes to the first flexible base layer 11, due to first soft
Property basalis 11 have light take out hole A, light take out hole A can change expose to the light take out hole A light refraction angle, light
The part for not being shown the first flexible base layer 11 that device 13 is covered may be refracted light into by taking out hole A, so as to increase
Plus light is by the area of the outgoing of the first flexible base layer 11, and then improve the light extraction efficiency of display device 13.
In addition, with the lightening development of flexible display panels 01, while in order that the flexible display panels 01 that must be formed
With good flexible, the thickness of single-layer flexible basalis is not more than 50 μm in usual flexible display panels 01.In this feelings
Under condition, it is preferred that thermal expansion particulate 20 is microspheres, a diameter of 1-40 μm of microspheres, so, can be to prevent
Only by coating during the first fexible film precursor solution the first flexible base layer 11 of formation, due to the size of thermal expansion particulate 20
Damage is caused very much greatly and to the first flexible base layer 11.
On this basis, the gas that the embodiment of the present invention is formed by the gasification of core 202 in thermal expansion particulate 20 so that
Adhesion reduction between first flexible base layer 11 and bearing substrate 10, so that the first flexible base layer 11 and carrying base
Plate 10 is easily isolated.
When percent by volume of the thermal expansion particulate 20 in the first fexible film precursor solution is less than 0.5%, core
The gas that 202 gasifications are formed is very few, so that the influence to the adhesion between the first flexible base layer 11 and bearing substrate 10 is smaller；
When percent by volume of the thermal expansion particulate 20 in the first fexible film precursor solution is more than 10%, the gasification shape of core 202
Into gas it is excessive, the gas can not only cause the first flexible base layer 11 and the adhesion of bearing substrate 10 to reduce, and can also make
The adhesion reduction between the first flexible base layer 11 and the second flexible base layer 12 is obtained, so that the Flexible Displays face formed
The less stable of plate 01.
To sum up state, it is preferred that percent by volume of the thermal expansion particulate 20 in the first fexible film precursor solution be
0.5%-10%, so, can both reduce the adhesion between the first flexible base layer 11 and bearing substrate 10, can also
Reduce the gas of the gasification formation of core 202 as far as possible to viscous between the first flexible base layer 11 and the second flexible base layer 12
The influence of attached power.
On this basis, in order to further improve the adhesion between the first flexible base layer 11 and the second flexible base layer 12
Power, optionally, the material and the second flexible thin of the part in the first fexible film precursor solution in addition to thermal expansion particulate 20
The material of film precursor solution is identical.In the case, the first flexible base layer 11 of formation and the second flexible base layer 12
Material proximate is identical, therefore adhesion between the two is higher.
In addition, when including thermal expansion particulate 20 in the second flexible base layer 12, when performing step S104, thermal expansion
The gas that the gasification of core 22 of particulate 20 is produced can influence the adhesion between the flexible base layer 12 of display device 13 and second, so that
Influence the stability of flexible display panels 01 formed.
Based on this, in order to prevent before the first flexible base layer 11 is separated with bearing substrate 10, the first flexible substrates
Thermal expansion particulate 20 in layer 11 is penetrated into the second flexible base layer 12, optionally, before step S102 is performed, to first
Flexible base layer 11 is solidified；Wherein, curing mode is illumination curing or is heating and curing.
Below in conjunction with specific embodiment, respectively to by being heating and curing and illumination curing is carried out to the first flexible base layer 11
During solidification, the manufacturing process of flexible display panels 01 is specifically illustrated.
In embodiment one, the present embodiment, the first flexible base layer 11 is solidified by mode of heating.In this situation
Under, the preparation method of flexible display panels 01 includes：
Step S201, as shown in Figure 2 a, coats the first fexible film containing thermal expansion particulate 20 on bearing substrate 10
Precursor solution, to form the first flexible base layer 11.
Wherein, constituting the material of the first fexible film precursor solution includes polyimides.Constitute housing 21 material be
Crylic acid resin polymer, the material for constituting core 22 is alkanes gas, the temperature that now housing 21 ruptures for 250~
260℃.The percent by volume of microspheres is 5% in first fexible film precursor solution.
Step S202, the bearing substrate 10 for being formed with the first flexible base layer 11 is heated, make it that first is flexible
Basalis 11 solidifies.Wherein, heating-up temperature is 220 DEG C, and the heat time is 1 hour.
Step S203, as shown in Figure 2 b, in the first flexible base layer 11 coating not comprising thermal expansion particulate 20 second
Fexible film precursor solution, to form the second flexible base layer 12.
Wherein, in addition to thermal expansion particulate 20, the material of the second fexible film precursor solution and the first fexible film forerunner
Liquid solution is identical.
Optionally, the bearing substrate 10 for being formed with the second flexible base layer 12 is heated, to cause the second flexible base
Bottom 12 solidifies.Wherein, heating-up temperature is 220 DEG C.
Step S204, as shown in Figure 2 c, display device 13 is prepared in the second flexible base layer 12.
Step S205, as shown in Figure 2 d, enters to the bearing substrate 10 that formation as shown in Figure 2 c has aforementioned display device part 13
Row heating so that the core 202 in above-mentioned thermal expansion particulate 20 gasifies, housing 201 ruptures, and by the first flexible base layer 11 from
Stripped down on bearing substrate 10, obtain flexible display panels 01 as shown in Figure 4.
In the present embodiment, before step S205, the first flexible base layer 11 is heating and curing, so as to prevent
Thermal expansion particulate 20 in first flexible base layer 11 is penetrated into the second flexible base layer 12.Due to the above-mentioned temperature being heating and curing
Degree is less than the temperature that housing 21 ruptures, therefore the gas release that the gasification of core 22 in thermal expansion particulate 20 will not be caused to be formed.
In embodiment two, the present embodiment, the first flexible base layer 11 is solidified by illumination methods.Constitute first soft
Property thin film precursor solution material be polyacrylate.Constitute the material and the material phase in embodiment one of thermal expansion particulate 20
Together.In the case, from unlike the preparation method of the flexible display panels 01 of embodiment one：
Step S202, ultraviolet light is carried out to the bearing substrate 10 for being formed with the first flexible base layer 11, to cause the
One flexible base layer 11 solidifies.Wherein, the light energy of ultraviolet light is 1500mJ/cm2。
In step S203, ultraviolet light is carried out to the bearing substrate 10 for being formed with the second flexible base layer 12, to cause
Second flexible base layer 12 solidifies.Wherein, the light energy of ultraviolet light is 1500mJ/cm2。
In the present embodiment, before step S205, to the first flexible base layer 11 carry out ultraviolet light solidification, so as to prevent
Only the thermal expansion particulate 20 in the first flexible base layer 11 is penetrated into the second flexible base layer 12.Because ultraviolet light will not
So that the gasification of core 22 in thermal expansion particulate 20 forms gas.
On this basis, in order to improve the ability that above-mentioned flexible display panels 01 prevent steam from invading, optionally, performing
Before step S104, the preparation method also includes：Processing is packaged to display device 13.
Example, when aforementioned display device part 13 is OLED, it is above-mentioned processing is packaged to display device 13 can be with
For：Thin-film encapsulation layer is formed away from the surface of the second flexible base layer 12 in display device 13, wherein, thin-film encapsulation layer is coated on
On aforementioned display device part 13.In the case, thin-film encapsulation layer can stop to steam.
In addition, the cleanliness factor in order to ensure the flexible display panels 01 to be formed, above-mentioned heating process and ultraviolet light
Process is carried out under vacuum conditions.
It should be noted that above-described embodiment one and two is the manufacturing process for the flexible display panels 01 that the present invention is provided
Specific embodiment, the material being directed to is not to constituting the material of fexible film precursor solution and thermal expansion particulate 20
Limitation.Those skilled in the art clearly instruct, as long as satisfaction solidifies to the first flexible base layer 11, will not cause
The material that the housing 21 of thermal expansion particulate 20 ruptures is within the scope of the present invention.
The embodiment of the present invention provides a kind of flexible display panels 01 as shown in Figure 4, including：First set gradually is flexible
The flexible base layer 12 of basalis 11 and second, and the display device 13 in above-mentioned second flexible base layer 12.
Wherein, the light that there is thermal expansion particulate to be formed after rupturing in the first flexible base layer 11 takes out hole A, and thermal expansion
Housing relic (not shown) after the rupture of particulate 20.
Preparation method of the above-mentioned flexible display panels 01 provided in an embodiment of the present invention according to Fig. 1 is formed.Specifically,
When being heated to bearing substrate 10, the core 202 in thermal expansion particulate 20 gasifies, housing 201 ruptures, therefore the gas of core 202
Change the gas produced to be released.Because the first flexible base layer 11 is located on bearing substrate 10, therefore in thermal expansion particulate 20
The gas that the gasification of core 202 is formed can cause the adhesion between the first flexible base layer 11 and bearing substrate 10 to reduce, so that
It is easy to be separated the first flexible base layer 11 with bearing substrate 10.In addition, by mode of heating by the first flexible base layer
11 separate with bearing substrate 10, it is possible to reduce the damage to display device 13.So, it can reduce the first flexible substrates
Influence of the layer 11 when being separated with bearing substrate 10 to the flexible display panels 01 of formation.
The embodiment of the present invention provides a kind of flexible display apparatus, including flexible display panels as described above 01, with
The identical structure of flexible display panels 01 and beneficial effect that previous embodiment is provided, because previous embodiment is to the flexibility
The structure and beneficial effect of display panel 01 are described in detail, and here is omitted.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of preparation method of flexible display panels, it is characterised in that including：
The first fexible film precursor solution containing thermal expansion particulate is coated on bearing substrate, to form the first flexible substrates
Layer；Wherein, the thermal expansion particulate is made up of housing and the core that is coated in the housing；
Second fexible film precursor solution of the coating not comprising thermal expansion particulate in first flexible base layer, to be formed
Second flexible base layer；
Display device is prepared in second flexible base layer；
The bearing substrate for being formed with the display device is heated, so that the core gasification of the thermal expansion particulate,
Casing rupture, and first flexible base layer is stripped down from the bearing substrate, obtain flexible display panels.
2. preparation method according to claim 1, it is characterised in that the thermal expansion particulate is microspheres, described
A diameter of 1-40 μm of microspheres.
3. preparation method according to claim 1, it is characterised in that the thermal expansion particulate is in first fexible film
Percent by volume in precursor solution is 0.5%-10%.
4. preparation method according to claim 1, it is characterised in that described before the flexible base layer of formation second
Preparation method also includes：
First flexible base layer is solidified；Wherein, curing mode is illumination curing or is heating and curing.
5. preparation method according to claim 1, it is characterised in that constituting the material of the housing includes thermoplasticity height
Molecular material；Constituting the material of the core includes liquid organic hydrocarbon material.
6. preparation method according to claim 4, it is characterised in that constitute the material bag of the housing of the thermal expansion particulate
Include crylic acid resin polymer；Constituting the material of the core of the thermal expansion particulate includes alkanes material；
When the curing mode is heating, constituting the material of the first fexible film precursor solution includes polyimides material
Material；
Or, when the curing mode is illumination, constituting the material of the first fexible film precursor solution includes poly- third
Olefin(e) acid ester material.
7. preparation method according to claim 1, it is characterised in that institute is removed in the first fexible film precursor solution
The material for stating part outside thermal expansion particulate is identical with the material of the second fexible film precursor solution.
8. preparation method according to claim 1, it is characterised in that described pair be formed with the display device carrying base
Before plate is heated, the preparation method also includes：
Processing is packaged to the display device.
9. a kind of flexible display panels, it is characterised in that including：The first flexible base layer and the second flexible substrates set gradually
Layer, and the display device in second flexible base layer；
Wherein, the light taking-up hole formed after being ruptured in first flexible base layer with thermal expansion particulate, and the heat are swollen
Housing relic after swollen particulate rupture.
10. a kind of flexible display apparatus, it is characterised in that including flexible display panels as claimed in claim 9.
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| CN108878648A (en) * | 2018-06-12 | 2018-11-23 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible display panels and its manufacturing method |
| WO2019095706A1 (en) * | 2017-11-16 | 2019-05-23 | 华为技术有限公司 | Flexible cover plate, flexible display device, and flexible terminal product |
| CN110383460A (en) * | 2019-05-21 | 2019-10-25 | 京东方科技集团股份有限公司 | The production method and board structure of flexible electronic substrate |
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| CN107441776A (en) * | 2017-09-11 | 2017-12-08 | 武汉华星光电半导体显示技术有限公司 | A kind of bubbling system, defoaming method and display panel |
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| US11320864B2 (en) | 2017-11-16 | 2022-05-03 | Huawei Technologies Co., Ltd. | Flexible cover plate, flexible display apparatus, and flexible terminal product |
| CN108878648A (en) * | 2018-06-12 | 2018-11-23 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible display panels and its manufacturing method |
| CN110383460A (en) * | 2019-05-21 | 2019-10-25 | 京东方科技集团股份有限公司 | The production method and board structure of flexible electronic substrate |
| WO2020232634A1 (en) * | 2019-05-21 | 2020-11-26 | 京东方科技集团股份有限公司 | Manufacturing method for flexible electronic substrate and substrate structure |
| CN110383460B (en) * | 2019-05-21 | 2021-11-30 | 京东方科技集团股份有限公司 | Manufacturing method of flexible electronic substrate and substrate structure |
| US11529802B2 (en) | 2019-05-21 | 2022-12-20 | Beijing Boe Technology Development Co., Ltd. | Manufacturing method of flexible electronic substrate and substrate structure |
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